php - 在 functions.php (WordPress) 中包含 ACF

Question

我第一次制作主题以在主题 forrest 上销售。我在开发过程中将 ACF 用作标准插件，以确保一切正常。

我快完成了，所以决定将我的 ACF 导出到 PHP 并将其包含到我的 functions.php 文件中。

我将它给我的代码复制/粘贴到 functions.php 中，包括 ACF、options-page 和 repeater -field 到我的主题中的一个文件夹中并相应地引用它们。

但是，当我访问我的网站时出现此错误:

fatal error :无法在第 46 行的/Applications/MAMP/htdocs/omg/wp-content/themes/omg-v1/external/acf/acf.php 中重新声明类 Acf

我也从插件文件夹中删除了实际的插件文件。

知道它为什么会出问题吗？

我知道它有很多代码，但如果有人想看，这是我的 functions.php(ACF 给我的)中的代码

include_once('external/acf/acf.php' );
define( 'ACF_LITE' , true );

// Add-ons 
include_once('external/acf-repeater/acf-repeater.php');
include_once('external/acf-options-page/acf-options-page.php');



if(function_exists("register_field_group"))
{
    register_field_group(array (
        'id' => 'acf_featured-story',
        'title' => 'Featured Story',
        'fields' => array (
            array (
                'key' => 'field_5256bd0fc7592',
                'label' => 'Is this story featured?',
                'name' => 'featured-story',
                'type' => 'true_false',
                'message' => 'Yes',
                'default_value' => 0,
            ),
        ),
        'location' => array (
            array (
                array (
                    'param' => 'post_type',
                    'operator' => '==',
                    'value' => 'post',
                    'order_no' => 0,
                    'group_no' => 0,
                ),
            ),
        ),
        'options' => array (
            'position' => 'side',
            'layout' => 'default',
            'hide_on_screen' => array (
            ),
        ),
        'menu_order' => 0,
    ));
    register_field_group(array (
        'id' => 'acf_options',
        'title' => 'Options',
        'fields' => array (
            array (
                'key' => 'field_525d1b6d49043',
                'label' => 'Homepage Layout (Left Column)',
                'name' => 'homepage-layout-left',
                'type' => 'repeater',
                'instructions' => 'Select which categories you want to display on the homepage.',
                'sub_fields' => array (
                    array (
                        'key' => 'field_525d1b8a49044',
                        'label' => 'Category',
                        'name' => 'category',
                        'type' => 'taxonomy',
                        'column_width' => '',
                        'taxonomy' => 'category',
                        'field_type' => 'select',
                        'allow_null' => 0,
                        'load_save_terms' => 0,
                        'return_format' => 'id',
                        'multiple' => 0,
                    ),
                    array (
                        'key' => 'field_525d2473de72c',
                        'label' => 'Number of Posts',
                        'name' => 'number-of-posts',
                        'type' => 'number',
                        'column_width' => '',
                        'default_value' => 4,
                        'placeholder' => '',
                        'prepend' => '',
                        'append' => '',
                        'min' => 2,
                        'max' => '',
                        'step' => 2,
                    ),
                ),
                'row_min' => 1,
                'row_limit' => 4,
                'layout' => 'row',
                'button_label' => 'Add a category',
            ),
            array (
                'key' => 'field_525d25ee91b41',
                'label' => 'Homepage Layout (Sidebar)',
                'name' => 'homepage-layout-sidebar',
                'type' => 'repeater',
                'instructions' => 'Select which categories you want to display in the sidebar.',
                'sub_fields' => array (
                    array (
                        'key' => 'field_525d25ee91b42',
                        'label' => 'Category',
                        'name' => 'category',
                        'type' => 'taxonomy',
                        'column_width' => '',
                        'taxonomy' => 'category',
                        'field_type' => 'select',
                        'allow_null' => 0,
                        'load_save_terms' => 0,
                        'return_format' => 'id',
                        'multiple' => 0,
                    ),
                    array (
                        'key' => 'field_525d25ee91b43',
                        'label' => 'Number of Posts',
                        'name' => 'number-of-posts',
                        'type' => 'number',
                        'column_width' => '',
                        'default_value' => 4,
                        'placeholder' => '',
                        'prepend' => '',
                        'append' => '',
                        'min' => 2,
                        'max' => '',
                        'step' => 2,
                    ),
                ),
                'row_min' => 1,
                'row_limit' => 4,
                'layout' => 'row',
                'button_label' => 'Add a category',
            ),
            array (
                'key' => 'field_525d2afdf101b',
                'label' => 'Newsletter (optional)',
                'name' => 'newsletter',
                'type' => 'repeater',
                'sub_fields' => array (
                    array (
                        'key' => 'field_525d2b6612426',
                        'label' => 'Link',
                        'name' => 'link',
                        'type' => 'text',
                        'instructions' => 'If you have a newsletter, copy/paste your link in here.',
                        'column_width' => '',
                        'default_value' => '',
                        'placeholder' => '',
                        'prepend' => '',
                        'append' => '',
                        'formatting' => 'none',
                        'maxlength' => '',
                    ),
                    array (
                        'key' => 'field_525d2bb40e332',
                        'label' => 'Text',
                        'name' => 'text',
                        'type' => 'textarea',
                        'instructions' => 'Enter your call to action for the newsletter here.',
                        'column_width' => '',
                        'default_value' => 'Subscribe!

                        To the OMG! newsletter!',
                        'placeholder' => '',
                        'maxlength' => 100,
                        'formatting' => 'br',
                    ),
                ),
                'row_min' => 0,
                'row_limit' => 1,
                'layout' => 'row',
                'button_label' => 'Add Newsletter Link',
            ),
            array (
                'key' => 'field_525e8b77edf6e',
                'label' => 'Advert',
                'name' => 'adverts',
                'type' => 'repeater',
                'instructions' => 'Do you wish to display an advert in your sidebar?',
                'sub_fields' => array (
                    array (
                        'key' => 'field_525e8c1e3600f',
                        'label' => 'Advert Image',
                        'name' => 'advert-img',
                        'type' => 'image',
                        'instructions' => 'Upload a 300 x 200px image for best quality / load time',
                        'column_width' => '',
                        'save_format' => 'url',
                        'preview_size' => 'full',
                        'library' => 'all',
                    ),
                    array (
                        'key' => 'field_525e8d1699619',
                        'label' => 'Link',
                        'name' => 'ad-link',
                        'type' => 'text',
                        'column_width' => '',
                        'default_value' => '',
                        'placeholder' => '',
                        'prepend' => '',
                        'append' => '',
                        'formatting' => 'none',
                        'maxlength' => '',
                    ),
                ),
                'row_min' => 0,
                'row_limit' => 1,
                'layout' => 'table',
                'button_label' => 'Add an Advert',
            ),
        ),
        'location' => array (
            array (
                array (
                    'param' => 'options_page',
                    'operator' => '==',
                    'value' => 'acf-options',
                    'order_no' => 0,
                    'group_no' => 0,
                ),
            ),
        ),
        'options' => array (
            'position' => 'normal',
            'layout' => 'no_box',
            'hide_on_screen' => array (
            ),
        ),
        'menu_order' => 0,
    ));
}

Answer 1

您需要确保您的包含不会与 ACF 本身或也使用它的其他人的插件冲突。

if( !class_exists('Acf') )
    include_once('external/acf/acf.php' );

if( !class_exists('acf_repeater_plugin') )
    include_once('external/acf-repeater/acf-repeater.php');

if( !class_exists('acf_options_page_plugin') )
    include_once('external/acf-options-page/acf-options-page.php');